about summary refs log tree commit diff
path: root/third_party/git/builtin/log.c
diff options
context:
space:
mode:
Diffstat (limited to 'third_party/git/builtin/log.c')
-rw-r--r--third_party/git/builtin/log.c2336
1 files changed, 0 insertions, 2336 deletions
diff --git a/third_party/git/builtin/log.c b/third_party/git/builtin/log.c
deleted file mode 100644
index 0a7ed4bef92b..000000000000
--- a/third_party/git/builtin/log.c
+++ /dev/null
@@ -1,2336 +0,0 @@
-/*
- * Builtin "git log" and related commands (show, whatchanged)
- *
- * (C) Copyright 2006 Linus Torvalds
- *		 2006 Junio Hamano
- */
-#define USE_THE_INDEX_COMPATIBILITY_MACROS
-#include "cache.h"
-#include "config.h"
-#include "refs.h"
-#include "object-store.h"
-#include "color.h"
-#include "commit.h"
-#include "diff.h"
-#include "revision.h"
-#include "log-tree.h"
-#include "builtin.h"
-#include "tag.h"
-#include "reflog-walk.h"
-#include "patch-ids.h"
-#include "run-command.h"
-#include "shortlog.h"
-#include "remote.h"
-#include "string-list.h"
-#include "parse-options.h"
-#include "line-log.h"
-#include "branch.h"
-#include "streaming.h"
-#include "version.h"
-#include "mailmap.h"
-#include "gpg-interface.h"
-#include "progress.h"
-#include "commit-slab.h"
-#include "repository.h"
-#include "commit-reach.h"
-#include "range-diff.h"
-
-#define MAIL_DEFAULT_WRAP 72
-#define COVER_FROM_AUTO_MAX_SUBJECT_LEN 100
-
-/* Set a default date-time format for git log ("log.date" config variable) */
-static const char *default_date_mode = NULL;
-
-static int default_abbrev_commit;
-static int default_show_root = 1;
-static int default_follow;
-static int default_show_signature;
-static int default_encode_email_headers = 1;
-static int decoration_style;
-static int decoration_given;
-static int use_mailmap_config = 1;
-static const char *fmt_patch_subject_prefix = "PATCH";
-static const char *fmt_pretty;
-
-static const char * const builtin_log_usage[] = {
-	N_("git log [<options>] [<revision-range>] [[--] <path>...]"),
-	N_("git show [<options>] <object>..."),
-	NULL
-};
-
-struct line_opt_callback_data {
-	struct rev_info *rev;
-	const char *prefix;
-	struct string_list args;
-};
-
-static int session_is_interactive(void)
-{
-	return isatty(1) || pager_in_use();
-}
-
-static int auto_decoration_style(void)
-{
-	return session_is_interactive() ? DECORATE_SHORT_REFS : 0;
-}
-
-static int parse_decoration_style(const char *value)
-{
-	switch (git_parse_maybe_bool(value)) {
-	case 1:
-		return DECORATE_SHORT_REFS;
-	case 0:
-		return 0;
-	default:
-		break;
-	}
-	if (!strcmp(value, "full"))
-		return DECORATE_FULL_REFS;
-	else if (!strcmp(value, "short"))
-		return DECORATE_SHORT_REFS;
-	else if (!strcmp(value, "auto"))
-		return auto_decoration_style();
-	/*
-	 * Please update _git_log() in git-completion.bash when you
-	 * add new decoration styles.
-	 */
-	return -1;
-}
-
-static int decorate_callback(const struct option *opt, const char *arg, int unset)
-{
-	if (unset)
-		decoration_style = 0;
-	else if (arg)
-		decoration_style = parse_decoration_style(arg);
-	else
-		decoration_style = DECORATE_SHORT_REFS;
-
-	if (decoration_style < 0)
-		die(_("invalid --decorate option: %s"), arg);
-
-	decoration_given = 1;
-
-	return 0;
-}
-
-static int log_line_range_callback(const struct option *option, const char *arg, int unset)
-{
-	struct line_opt_callback_data *data = option->value;
-
-	BUG_ON_OPT_NEG(unset);
-
-	if (!arg)
-		return -1;
-
-	data->rev->line_level_traverse = 1;
-	string_list_append(&data->args, arg);
-
-	return 0;
-}
-
-static void init_log_defaults(void)
-{
-	init_grep_defaults(the_repository);
-	init_diff_ui_defaults();
-
-	decoration_style = auto_decoration_style();
-}
-
-static void cmd_log_init_defaults(struct rev_info *rev)
-{
-	if (fmt_pretty)
-		get_commit_format(fmt_pretty, rev);
-	if (default_follow)
-		rev->diffopt.flags.default_follow_renames = 1;
-	rev->verbose_header = 1;
-	rev->diffopt.flags.recursive = 1;
-	rev->diffopt.stat_width = -1; /* use full terminal width */
-	rev->diffopt.stat_graph_width = -1; /* respect statGraphWidth config */
-	rev->abbrev_commit = default_abbrev_commit;
-	rev->show_root_diff = default_show_root;
-	rev->subject_prefix = fmt_patch_subject_prefix;
-	rev->show_signature = default_show_signature;
-	rev->encode_email_headers = default_encode_email_headers;
-	rev->diffopt.flags.allow_textconv = 1;
-
-	if (default_date_mode)
-		parse_date_format(default_date_mode, &rev->date_mode);
-}
-
-static void cmd_log_init_finish(int argc, const char **argv, const char *prefix,
-			 struct rev_info *rev, struct setup_revision_opt *opt)
-{
-	struct userformat_want w;
-	int quiet = 0, source = 0, mailmap;
-	static struct line_opt_callback_data line_cb = {NULL, NULL, STRING_LIST_INIT_DUP};
-	static struct string_list decorate_refs_exclude = STRING_LIST_INIT_NODUP;
-	static struct string_list decorate_refs_exclude_config = STRING_LIST_INIT_NODUP;
-	static struct string_list decorate_refs_include = STRING_LIST_INIT_NODUP;
-	struct decoration_filter decoration_filter = {&decorate_refs_include,
-						      &decorate_refs_exclude,
-						      &decorate_refs_exclude_config};
-	static struct revision_sources revision_sources;
-
-	const struct option builtin_log_options[] = {
-		OPT__QUIET(&quiet, N_("suppress diff output")),
-		OPT_BOOL(0, "source", &source, N_("show source")),
-		OPT_BOOL(0, "use-mailmap", &mailmap, N_("Use mail map file")),
-		OPT_ALIAS(0, "mailmap", "use-mailmap"),
-		OPT_STRING_LIST(0, "decorate-refs", &decorate_refs_include,
-				N_("pattern"), N_("only decorate refs that match <pattern>")),
-		OPT_STRING_LIST(0, "decorate-refs-exclude", &decorate_refs_exclude,
-				N_("pattern"), N_("do not decorate refs that match <pattern>")),
-		OPT_CALLBACK_F(0, "decorate", NULL, NULL, N_("decorate options"),
-			       PARSE_OPT_OPTARG, decorate_callback),
-		OPT_CALLBACK('L', NULL, &line_cb, "n,m:file",
-			     N_("Process line range n,m in file, counting from 1"),
-			     log_line_range_callback),
-		OPT_END()
-	};
-
-	line_cb.rev = rev;
-	line_cb.prefix = prefix;
-
-	mailmap = use_mailmap_config;
-	argc = parse_options(argc, argv, prefix,
-			     builtin_log_options, builtin_log_usage,
-			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
-			     PARSE_OPT_KEEP_DASHDASH);
-
-	if (quiet)
-		rev->diffopt.output_format |= DIFF_FORMAT_NO_OUTPUT;
-	argc = setup_revisions(argc, argv, rev, opt);
-
-	/* Any arguments at this point are not recognized */
-	if (argc > 1)
-		die(_("unrecognized argument: %s"), argv[1]);
-
-	memset(&w, 0, sizeof(w));
-	userformat_find_requirements(NULL, &w);
-
-	if (!rev->show_notes_given && (!rev->pretty_given || w.notes))
-		rev->show_notes = 1;
-	if (rev->show_notes)
-		load_display_notes(&rev->notes_opt);
-
-	if ((rev->diffopt.pickaxe_opts & DIFF_PICKAXE_KINDS_MASK) ||
-	    rev->diffopt.filter || rev->diffopt.flags.follow_renames)
-		rev->always_show_header = 0;
-
-	if (source || w.source) {
-		init_revision_sources(&revision_sources);
-		rev->sources = &revision_sources;
-	}
-
-	if (mailmap) {
-		rev->mailmap = xcalloc(1, sizeof(struct string_list));
-		read_mailmap(rev->mailmap, NULL);
-	}
-
-	if (rev->pretty_given && rev->commit_format == CMIT_FMT_RAW) {
-		/*
-		 * "log --pretty=raw" is special; ignore UI oriented
-		 * configuration variables such as decoration.
-		 */
-		if (!decoration_given)
-			decoration_style = 0;
-		if (!rev->abbrev_commit_given)
-			rev->abbrev_commit = 0;
-	}
-
-	if (decoration_style) {
-		const struct string_list *config_exclude =
-			repo_config_get_value_multi(the_repository,
-						    "log.excludeDecoration");
-
-		if (config_exclude) {
-			struct string_list_item *item;
-			for_each_string_list_item(item, config_exclude)
-				string_list_append(&decorate_refs_exclude_config,
-						   item->string);
-		}
-
-		rev->show_decorations = 1;
-
-		load_ref_decorations(&decoration_filter, decoration_style);
-	}
-
-	if (rev->line_level_traverse)
-		line_log_init(rev, line_cb.prefix, &line_cb.args);
-
-	setup_pager();
-}
-
-static void cmd_log_init(int argc, const char **argv, const char *prefix,
-			 struct rev_info *rev, struct setup_revision_opt *opt)
-{
-	cmd_log_init_defaults(rev);
-	cmd_log_init_finish(argc, argv, prefix, rev, opt);
-}
-
-/*
- * This gives a rough estimate for how many commits we
- * will print out in the list.
- */
-static int estimate_commit_count(struct commit_list *list)
-{
-	int n = 0;
-
-	while (list) {
-		struct commit *commit = list->item;
-		unsigned int flags = commit->object.flags;
-		list = list->next;
-		if (!(flags & (TREESAME | UNINTERESTING)))
-			n++;
-	}
-	return n;
-}
-
-static void show_early_header(struct rev_info *rev, const char *stage, int nr)
-{
-	if (rev->shown_one) {
-		rev->shown_one = 0;
-		if (rev->commit_format != CMIT_FMT_ONELINE)
-			putchar(rev->diffopt.line_termination);
-	}
-	fprintf(rev->diffopt.file, _("Final output: %d %s\n"), nr, stage);
-}
-
-static struct itimerval early_output_timer;
-
-static void log_show_early(struct rev_info *revs, struct commit_list *list)
-{
-	int i = revs->early_output, close_file = revs->diffopt.close_file;
-	int show_header = 1;
-
-	revs->diffopt.close_file = 0;
-	sort_in_topological_order(&list, revs->sort_order);
-	while (list && i) {
-		struct commit *commit = list->item;
-		switch (simplify_commit(revs, commit)) {
-		case commit_show:
-			if (show_header) {
-				int n = estimate_commit_count(list);
-				show_early_header(revs, "incomplete", n);
-				show_header = 0;
-			}
-			log_tree_commit(revs, commit);
-			i--;
-			break;
-		case commit_ignore:
-			break;
-		case commit_error:
-			if (close_file)
-				fclose(revs->diffopt.file);
-			return;
-		}
-		list = list->next;
-	}
-
-	/* Did we already get enough commits for the early output? */
-	if (!i) {
-		if (close_file)
-			fclose(revs->diffopt.file);
-		return;
-	}
-
-	/*
-	 * ..if no, then repeat it twice a second until we
-	 * do.
-	 *
-	 * NOTE! We don't use "it_interval", because if the
-	 * reader isn't listening, we want our output to be
-	 * throttled by the writing, and not have the timer
-	 * trigger every second even if we're blocked on a
-	 * reader!
-	 */
-	early_output_timer.it_value.tv_sec = 0;
-	early_output_timer.it_value.tv_usec = 500000;
-	setitimer(ITIMER_REAL, &early_output_timer, NULL);
-}
-
-static void early_output(int signal)
-{
-	show_early_output = log_show_early;
-}
-
-static void setup_early_output(void)
-{
-	struct sigaction sa;
-
-	/*
-	 * Set up the signal handler, minimally intrusively:
-	 * we only set a single volatile integer word (not
-	 * using sigatomic_t - trying to avoid unnecessary
-	 * system dependencies and headers), and using
-	 * SA_RESTART.
-	 */
-	memset(&sa, 0, sizeof(sa));
-	sa.sa_handler = early_output;
-	sigemptyset(&sa.sa_mask);
-	sa.sa_flags = SA_RESTART;
-	sigaction(SIGALRM, &sa, NULL);
-
-	/*
-	 * If we can get the whole output in less than a
-	 * tenth of a second, don't even bother doing the
-	 * early-output thing..
-	 *
-	 * This is a one-time-only trigger.
-	 */
-	early_output_timer.it_value.tv_sec = 0;
-	early_output_timer.it_value.tv_usec = 100000;
-	setitimer(ITIMER_REAL, &early_output_timer, NULL);
-}
-
-static void finish_early_output(struct rev_info *rev)
-{
-	int n = estimate_commit_count(rev->commits);
-	signal(SIGALRM, SIG_IGN);
-	show_early_header(rev, "done", n);
-}
-
-static int cmd_log_walk(struct rev_info *rev)
-{
-	struct commit *commit;
-	int saved_nrl = 0;
-	int saved_dcctc = 0, close_file = rev->diffopt.close_file;
-
-	if (rev->early_output)
-		setup_early_output();
-
-	if (prepare_revision_walk(rev))
-		die(_("revision walk setup failed"));
-
-	if (rev->early_output)
-		finish_early_output(rev);
-
-	/*
-	 * For --check and --exit-code, the exit code is based on CHECK_FAILED
-	 * and HAS_CHANGES being accumulated in rev->diffopt, so be careful to
-	 * retain that state information if replacing rev->diffopt in this loop
-	 */
-	rev->diffopt.close_file = 0;
-	while ((commit = get_revision(rev)) != NULL) {
-		if (!log_tree_commit(rev, commit) && rev->max_count >= 0)
-			/*
-			 * We decremented max_count in get_revision,
-			 * but we didn't actually show the commit.
-			 */
-			rev->max_count++;
-		if (!rev->reflog_info) {
-			/*
-			 * We may show a given commit multiple times when
-			 * walking the reflogs.
-			 */
-			free_commit_buffer(the_repository->parsed_objects,
-					   commit);
-			free_commit_list(commit->parents);
-			commit->parents = NULL;
-		}
-		if (saved_nrl < rev->diffopt.needed_rename_limit)
-			saved_nrl = rev->diffopt.needed_rename_limit;
-		if (rev->diffopt.degraded_cc_to_c)
-			saved_dcctc = 1;
-	}
-	rev->diffopt.degraded_cc_to_c = saved_dcctc;
-	rev->diffopt.needed_rename_limit = saved_nrl;
-	if (close_file)
-		fclose(rev->diffopt.file);
-
-	if (rev->diffopt.output_format & DIFF_FORMAT_CHECKDIFF &&
-	    rev->diffopt.flags.check_failed) {
-		return 02;
-	}
-	return diff_result_code(&rev->diffopt, 0);
-}
-
-static int git_log_config(const char *var, const char *value, void *cb)
-{
-	const char *slot_name;
-
-	if (!strcmp(var, "format.pretty"))
-		return git_config_string(&fmt_pretty, var, value);
-	if (!strcmp(var, "format.subjectprefix"))
-		return git_config_string(&fmt_patch_subject_prefix, var, value);
-	if (!strcmp(var, "format.encodeemailheaders")) {
-		default_encode_email_headers = git_config_bool(var, value);
-		return 0;
-	}
-	if (!strcmp(var, "log.abbrevcommit")) {
-		default_abbrev_commit = git_config_bool(var, value);
-		return 0;
-	}
-	if (!strcmp(var, "log.date"))
-		return git_config_string(&default_date_mode, var, value);
-	if (!strcmp(var, "log.decorate")) {
-		decoration_style = parse_decoration_style(value);
-		if (decoration_style < 0)
-			decoration_style = 0; /* maybe warn? */
-		return 0;
-	}
-	if (!strcmp(var, "log.showroot")) {
-		default_show_root = git_config_bool(var, value);
-		return 0;
-	}
-	if (!strcmp(var, "log.follow")) {
-		default_follow = git_config_bool(var, value);
-		return 0;
-	}
-	if (skip_prefix(var, "color.decorate.", &slot_name))
-		return parse_decorate_color_config(var, slot_name, value);
-	if (!strcmp(var, "log.mailmap")) {
-		use_mailmap_config = git_config_bool(var, value);
-		return 0;
-	}
-	if (!strcmp(var, "log.showsignature")) {
-		default_show_signature = git_config_bool(var, value);
-		return 0;
-	}
-
-	if (grep_config(var, value, cb) < 0)
-		return -1;
-	if (git_gpg_config(var, value, cb) < 0)
-		return -1;
-	return git_diff_ui_config(var, value, cb);
-}
-
-int cmd_whatchanged(int argc, const char **argv, const char *prefix)
-{
-	struct rev_info rev;
-	struct setup_revision_opt opt;
-
-	init_log_defaults();
-	git_config(git_log_config, NULL);
-
-	repo_init_revisions(the_repository, &rev, prefix);
-	rev.diff = 1;
-	rev.simplify_history = 0;
-	memset(&opt, 0, sizeof(opt));
-	opt.def = "HEAD";
-	opt.revarg_opt = REVARG_COMMITTISH;
-	cmd_log_init(argc, argv, prefix, &rev, &opt);
-	if (!rev.diffopt.output_format)
-		rev.diffopt.output_format = DIFF_FORMAT_RAW;
-	return cmd_log_walk(&rev);
-}
-
-static void show_tagger(const char *buf, struct rev_info *rev)
-{
-	struct strbuf out = STRBUF_INIT;
-	struct pretty_print_context pp = {0};
-
-	pp.fmt = rev->commit_format;
-	pp.date_mode = rev->date_mode;
-	pp_user_info(&pp, "Tagger", &out, buf, get_log_output_encoding());
-	fprintf(rev->diffopt.file, "%s", out.buf);
-	strbuf_release(&out);
-}
-
-static int show_blob_object(const struct object_id *oid, struct rev_info *rev, const char *obj_name)
-{
-	struct object_id oidc;
-	struct object_context obj_context;
-	char *buf;
-	unsigned long size;
-
-	fflush(rev->diffopt.file);
-	if (!rev->diffopt.flags.textconv_set_via_cmdline ||
-	    !rev->diffopt.flags.allow_textconv)
-		return stream_blob_to_fd(1, oid, NULL, 0);
-
-	if (get_oid_with_context(the_repository, obj_name,
-				 GET_OID_RECORD_PATH,
-				 &oidc, &obj_context))
-		die(_("not a valid object name %s"), obj_name);
-	if (!obj_context.path ||
-	    !textconv_object(the_repository, obj_context.path,
-			     obj_context.mode, &oidc, 1, &buf, &size)) {
-		free(obj_context.path);
-		return stream_blob_to_fd(1, oid, NULL, 0);
-	}
-
-	if (!buf)
-		die(_("git show %s: bad file"), obj_name);
-
-	write_or_die(1, buf, size);
-	free(obj_context.path);
-	return 0;
-}
-
-static int show_tag_object(const struct object_id *oid, struct rev_info *rev)
-{
-	unsigned long size;
-	enum object_type type;
-	char *buf = read_object_file(oid, &type, &size);
-	int offset = 0;
-
-	if (!buf)
-		return error(_("could not read object %s"), oid_to_hex(oid));
-
-	assert(type == OBJ_TAG);
-	while (offset < size && buf[offset] != '\n') {
-		int new_offset = offset + 1;
-		const char *ident;
-		while (new_offset < size && buf[new_offset++] != '\n')
-			; /* do nothing */
-		if (skip_prefix(buf + offset, "tagger ", &ident))
-			show_tagger(ident, rev);
-		offset = new_offset;
-	}
-
-	if (offset < size)
-		fwrite(buf + offset, size - offset, 1, rev->diffopt.file);
-	free(buf);
-	return 0;
-}
-
-static int show_tree_object(const struct object_id *oid,
-		struct strbuf *base,
-		const char *pathname, unsigned mode, int stage, void *context)
-{
-	FILE *file = context;
-	fprintf(file, "%s%s\n", pathname, S_ISDIR(mode) ? "/" : "");
-	return 0;
-}
-
-static void show_setup_revisions_tweak(struct rev_info *rev,
-				       struct setup_revision_opt *opt)
-{
-	if (rev->ignore_merges < 0) {
-		/* There was no "-m" variant on the command line */
-		rev->ignore_merges = 0;
-		if (!rev->first_parent_only && !rev->combine_merges) {
-			/* No "--first-parent", "-c", or "--cc" */
-			rev->combine_merges = 1;
-			rev->dense_combined_merges = 1;
-		}
-	}
-	if (!rev->diffopt.output_format)
-		rev->diffopt.output_format = DIFF_FORMAT_PATCH;
-}
-
-int cmd_show(int argc, const char **argv, const char *prefix)
-{
-	struct rev_info rev;
-	struct object_array_entry *objects;
-	struct setup_revision_opt opt;
-	struct pathspec match_all;
-	int i, count, ret = 0;
-
-	init_log_defaults();
-	git_config(git_log_config, NULL);
-
-	memset(&match_all, 0, sizeof(match_all));
-	repo_init_revisions(the_repository, &rev, prefix);
-	rev.diff = 1;
-	rev.always_show_header = 1;
-	rev.no_walk = REVISION_WALK_NO_WALK_SORTED;
-	rev.diffopt.stat_width = -1; 	/* Scale to real terminal size */
-
-	memset(&opt, 0, sizeof(opt));
-	opt.def = "HEAD";
-	opt.tweak = show_setup_revisions_tweak;
-	cmd_log_init(argc, argv, prefix, &rev, &opt);
-
-	if (!rev.no_walk)
-		return cmd_log_walk(&rev);
-
-	count = rev.pending.nr;
-	objects = rev.pending.objects;
-	for (i = 0; i < count && !ret; i++) {
-		struct object *o = objects[i].item;
-		const char *name = objects[i].name;
-		switch (o->type) {
-		case OBJ_BLOB:
-			ret = show_blob_object(&o->oid, &rev, name);
-			break;
-		case OBJ_TAG: {
-			struct tag *t = (struct tag *)o;
-			struct object_id *oid = get_tagged_oid(t);
-
-			if (rev.shown_one)
-				putchar('\n');
-			fprintf(rev.diffopt.file, "%stag %s%s\n",
-					diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
-					t->tag,
-					diff_get_color_opt(&rev.diffopt, DIFF_RESET));
-			ret = show_tag_object(&o->oid, &rev);
-			rev.shown_one = 1;
-			if (ret)
-				break;
-			o = parse_object(the_repository, oid);
-			if (!o)
-				ret = error(_("could not read object %s"),
-					    oid_to_hex(oid));
-			objects[i].item = o;
-			i--;
-			break;
-		}
-		case OBJ_TREE:
-			if (rev.shown_one)
-				putchar('\n');
-			fprintf(rev.diffopt.file, "%stree %s%s\n\n",
-					diff_get_color_opt(&rev.diffopt, DIFF_COMMIT),
-					name,
-					diff_get_color_opt(&rev.diffopt, DIFF_RESET));
-			read_tree_recursive(the_repository, (struct tree *)o, "",
-					    0, 0, &match_all, show_tree_object,
-					    rev.diffopt.file);
-			rev.shown_one = 1;
-			break;
-		case OBJ_COMMIT:
-			rev.pending.nr = rev.pending.alloc = 0;
-			rev.pending.objects = NULL;
-			add_object_array(o, name, &rev.pending);
-			ret = cmd_log_walk(&rev);
-			break;
-		default:
-			ret = error(_("unknown type: %d"), o->type);
-		}
-	}
-	free(objects);
-	return ret;
-}
-
-/*
- * This is equivalent to "git log -g --abbrev-commit --pretty=oneline"
- */
-int cmd_log_reflog(int argc, const char **argv, const char *prefix)
-{
-	struct rev_info rev;
-	struct setup_revision_opt opt;
-
-	init_log_defaults();
-	git_config(git_log_config, NULL);
-
-	repo_init_revisions(the_repository, &rev, prefix);
-	init_reflog_walk(&rev.reflog_info);
-	rev.verbose_header = 1;
-	memset(&opt, 0, sizeof(opt));
-	opt.def = "HEAD";
-	cmd_log_init_defaults(&rev);
-	rev.abbrev_commit = 1;
-	rev.commit_format = CMIT_FMT_ONELINE;
-	rev.use_terminator = 1;
-	rev.always_show_header = 1;
-	cmd_log_init_finish(argc, argv, prefix, &rev, &opt);
-
-	return cmd_log_walk(&rev);
-}
-
-static void log_setup_revisions_tweak(struct rev_info *rev,
-				      struct setup_revision_opt *opt)
-{
-	if (rev->diffopt.flags.default_follow_renames &&
-	    rev->prune_data.nr == 1)
-		rev->diffopt.flags.follow_renames = 1;
-
-	/* Turn --cc/-c into -p --cc/-c when -p was not given */
-	if (!rev->diffopt.output_format && rev->combine_merges)
-		rev->diffopt.output_format = DIFF_FORMAT_PATCH;
-
-	if (rev->first_parent_only && rev->ignore_merges < 0)
-		rev->ignore_merges = 0;
-}
-
-int cmd_log(int argc, const char **argv, const char *prefix)
-{
-	struct rev_info rev;
-	struct setup_revision_opt opt;
-
-	init_log_defaults();
-	git_config(git_log_config, NULL);
-
-	repo_init_revisions(the_repository, &rev, prefix);
-	rev.always_show_header = 1;
-	memset(&opt, 0, sizeof(opt));
-	opt.def = "HEAD";
-	opt.revarg_opt = REVARG_COMMITTISH;
-	opt.tweak = log_setup_revisions_tweak;
-	cmd_log_init(argc, argv, prefix, &rev, &opt);
-	return cmd_log_walk(&rev);
-}
-
-/* format-patch */
-
-static const char *fmt_patch_suffix = ".patch";
-static int numbered = 0;
-static int auto_number = 1;
-
-static char *default_attach = NULL;
-
-static struct string_list extra_hdr = STRING_LIST_INIT_NODUP;
-static struct string_list extra_to = STRING_LIST_INIT_NODUP;
-static struct string_list extra_cc = STRING_LIST_INIT_NODUP;
-
-static void add_header(const char *value)
-{
-	struct string_list_item *item;
-	int len = strlen(value);
-	while (len && value[len - 1] == '\n')
-		len--;
-
-	if (!strncasecmp(value, "to: ", 4)) {
-		item = string_list_append(&extra_to, value + 4);
-		len -= 4;
-	} else if (!strncasecmp(value, "cc: ", 4)) {
-		item = string_list_append(&extra_cc, value + 4);
-		len -= 4;
-	} else {
-		item = string_list_append(&extra_hdr, value);
-	}
-
-	item->string[len] = '\0';
-}
-
-enum cover_setting {
-	COVER_UNSET,
-	COVER_OFF,
-	COVER_ON,
-	COVER_AUTO
-};
-
-enum thread_level {
-	THREAD_UNSET,
-	THREAD_SHALLOW,
-	THREAD_DEEP
-};
-
-enum cover_from_description {
-	COVER_FROM_NONE,
-	COVER_FROM_MESSAGE,
-	COVER_FROM_SUBJECT,
-	COVER_FROM_AUTO
-};
-
-enum auto_base_setting {
-	AUTO_BASE_NEVER,
-	AUTO_BASE_ALWAYS,
-	AUTO_BASE_WHEN_ABLE
-};
-
-static enum thread_level thread;
-static int do_signoff;
-static enum auto_base_setting auto_base;
-static char *from;
-static const char *signature = git_version_string;
-static const char *signature_file;
-static enum cover_setting config_cover_letter;
-static const char *config_output_directory;
-static enum cover_from_description cover_from_description_mode = COVER_FROM_MESSAGE;
-static int show_notes;
-static struct display_notes_opt notes_opt;
-
-static enum cover_from_description parse_cover_from_description(const char *arg)
-{
-	if (!arg || !strcmp(arg, "default"))
-		return COVER_FROM_MESSAGE;
-	else if (!strcmp(arg, "none"))
-		return COVER_FROM_NONE;
-	else if (!strcmp(arg, "message"))
-		return COVER_FROM_MESSAGE;
-	else if (!strcmp(arg, "subject"))
-		return COVER_FROM_SUBJECT;
-	else if (!strcmp(arg, "auto"))
-		return COVER_FROM_AUTO;
-	else
-		die(_("%s: invalid cover from description mode"), arg);
-}
-
-static int git_format_config(const char *var, const char *value, void *cb)
-{
-	if (!strcmp(var, "format.headers")) {
-		if (!value)
-			die(_("format.headers without value"));
-		add_header(value);
-		return 0;
-	}
-	if (!strcmp(var, "format.suffix"))
-		return git_config_string(&fmt_patch_suffix, var, value);
-	if (!strcmp(var, "format.to")) {
-		if (!value)
-			return config_error_nonbool(var);
-		string_list_append(&extra_to, value);
-		return 0;
-	}
-	if (!strcmp(var, "format.cc")) {
-		if (!value)
-			return config_error_nonbool(var);
-		string_list_append(&extra_cc, value);
-		return 0;
-	}
-	if (!strcmp(var, "diff.color") || !strcmp(var, "color.diff") ||
-	    !strcmp(var, "color.ui") || !strcmp(var, "diff.submodule")) {
-		return 0;
-	}
-	if (!strcmp(var, "format.numbered")) {
-		if (value && !strcasecmp(value, "auto")) {
-			auto_number = 1;
-			return 0;
-		}
-		numbered = git_config_bool(var, value);
-		auto_number = auto_number && numbered;
-		return 0;
-	}
-	if (!strcmp(var, "format.attach")) {
-		if (value && *value)
-			default_attach = xstrdup(value);
-		else
-			default_attach = xstrdup(git_version_string);
-		return 0;
-	}
-	if (!strcmp(var, "format.thread")) {
-		if (value && !strcasecmp(value, "deep")) {
-			thread = THREAD_DEEP;
-			return 0;
-		}
-		if (value && !strcasecmp(value, "shallow")) {
-			thread = THREAD_SHALLOW;
-			return 0;
-		}
-		thread = git_config_bool(var, value) ? THREAD_SHALLOW : THREAD_UNSET;
-		return 0;
-	}
-	if (!strcmp(var, "format.signoff")) {
-		do_signoff = git_config_bool(var, value);
-		return 0;
-	}
-	if (!strcmp(var, "format.signature"))
-		return git_config_string(&signature, var, value);
-	if (!strcmp(var, "format.signaturefile"))
-		return git_config_pathname(&signature_file, var, value);
-	if (!strcmp(var, "format.coverletter")) {
-		if (value && !strcasecmp(value, "auto")) {
-			config_cover_letter = COVER_AUTO;
-			return 0;
-		}
-		config_cover_letter = git_config_bool(var, value) ? COVER_ON : COVER_OFF;
-		return 0;
-	}
-	if (!strcmp(var, "format.outputdirectory"))
-		return git_config_string(&config_output_directory, var, value);
-	if (!strcmp(var, "format.useautobase")) {
-		if (value && !strcasecmp(value, "whenAble")) {
-			auto_base = AUTO_BASE_WHEN_ABLE;
-			return 0;
-		}
-		auto_base = git_config_bool(var, value) ? AUTO_BASE_ALWAYS : AUTO_BASE_NEVER;
-		return 0;
-	}
-	if (!strcmp(var, "format.from")) {
-		int b = git_parse_maybe_bool(value);
-		free(from);
-		if (b < 0)
-			from = xstrdup(value);
-		else if (b)
-			from = xstrdup(git_committer_info(IDENT_NO_DATE));
-		else
-			from = NULL;
-		return 0;
-	}
-	if (!strcmp(var, "format.notes")) {
-		int b = git_parse_maybe_bool(value);
-		if (b < 0)
-			enable_ref_display_notes(&notes_opt, &show_notes, value);
-		else if (b)
-			enable_default_display_notes(&notes_opt, &show_notes);
-		else
-			disable_display_notes(&notes_opt, &show_notes);
-		return 0;
-	}
-	if (!strcmp(var, "format.coverfromdescription")) {
-		cover_from_description_mode = parse_cover_from_description(value);
-		return 0;
-	}
-
-	return git_log_config(var, value, cb);
-}
-
-static const char *output_directory = NULL;
-static int outdir_offset;
-
-static int open_next_file(struct commit *commit, const char *subject,
-			 struct rev_info *rev, int quiet)
-{
-	struct strbuf filename = STRBUF_INIT;
-	int suffix_len = strlen(rev->patch_suffix) + 1;
-
-	if (output_directory) {
-		strbuf_addstr(&filename, output_directory);
-		if (filename.len >=
-		    PATH_MAX - FORMAT_PATCH_NAME_MAX - suffix_len) {
-			strbuf_release(&filename);
-			return error(_("name of output directory is too long"));
-		}
-		strbuf_complete(&filename, '/');
-	}
-
-	if (rev->numbered_files)
-		strbuf_addf(&filename, "%d", rev->nr);
-	else if (commit)
-		fmt_output_commit(&filename, commit, rev);
-	else
-		fmt_output_subject(&filename, subject, rev);
-
-	if (!quiet)
-		printf("%s\n", filename.buf + outdir_offset);
-
-	if ((rev->diffopt.file = fopen(filename.buf, "w")) == NULL) {
-		error_errno(_("cannot open patch file %s"), filename.buf);
-		strbuf_release(&filename);
-		return -1;
-	}
-
-	strbuf_release(&filename);
-	return 0;
-}
-
-static void get_patch_ids(struct rev_info *rev, struct patch_ids *ids)
-{
-	struct rev_info check_rev;
-	struct commit *commit, *c1, *c2;
-	struct object *o1, *o2;
-	unsigned flags1, flags2;
-
-	if (rev->pending.nr != 2)
-		die(_("need exactly one range"));
-
-	o1 = rev->pending.objects[0].item;
-	o2 = rev->pending.objects[1].item;
-	flags1 = o1->flags;
-	flags2 = o2->flags;
-	c1 = lookup_commit_reference(the_repository, &o1->oid);
-	c2 = lookup_commit_reference(the_repository, &o2->oid);
-
-	if ((flags1 & UNINTERESTING) == (flags2 & UNINTERESTING))
-		die(_("not a range"));
-
-	init_patch_ids(the_repository, ids);
-
-	/* given a range a..b get all patch ids for b..a */
-	repo_init_revisions(the_repository, &check_rev, rev->prefix);
-	check_rev.max_parents = 1;
-	o1->flags ^= UNINTERESTING;
-	o2->flags ^= UNINTERESTING;
-	add_pending_object(&check_rev, o1, "o1");
-	add_pending_object(&check_rev, o2, "o2");
-	if (prepare_revision_walk(&check_rev))
-		die(_("revision walk setup failed"));
-
-	while ((commit = get_revision(&check_rev)) != NULL) {
-		add_commit_patch_id(commit, ids);
-	}
-
-	/* reset for next revision walk */
-	clear_commit_marks(c1, SEEN | UNINTERESTING | SHOWN | ADDED);
-	clear_commit_marks(c2, SEEN | UNINTERESTING | SHOWN | ADDED);
-	o1->flags = flags1;
-	o2->flags = flags2;
-}
-
-static void gen_message_id(struct rev_info *info, char *base)
-{
-	struct strbuf buf = STRBUF_INIT;
-	strbuf_addf(&buf, "%s.%"PRItime".git.%s", base,
-		    (timestamp_t) time(NULL),
-		    git_committer_info(IDENT_NO_NAME|IDENT_NO_DATE|IDENT_STRICT));
-	info->message_id = strbuf_detach(&buf, NULL);
-}
-
-static void print_signature(FILE *file)
-{
-	if (!signature || !*signature)
-		return;
-
-	fprintf(file, "-- \n%s", signature);
-	if (signature[strlen(signature)-1] != '\n')
-		putc('\n', file);
-	putc('\n', file);
-}
-
-static char *find_branch_name(struct rev_info *rev)
-{
-	int i, positive = -1;
-	struct object_id branch_oid;
-	const struct object_id *tip_oid;
-	const char *ref, *v;
-	char *full_ref, *branch = NULL;
-
-	for (i = 0; i < rev->cmdline.nr; i++) {
-		if (rev->cmdline.rev[i].flags & UNINTERESTING)
-			continue;
-		if (positive < 0)
-			positive = i;
-		else
-			return NULL;
-	}
-	if (positive < 0)
-		return NULL;
-	ref = rev->cmdline.rev[positive].name;
-	tip_oid = &rev->cmdline.rev[positive].item->oid;
-	if (dwim_ref(ref, strlen(ref), &branch_oid, &full_ref, 0) &&
-	    skip_prefix(full_ref, "refs/heads/", &v) &&
-	    oideq(tip_oid, &branch_oid))
-		branch = xstrdup(v);
-	free(full_ref);
-	return branch;
-}
-
-static void show_diffstat(struct rev_info *rev,
-			  struct commit *origin, struct commit *head)
-{
-	struct diff_options opts;
-
-	memcpy(&opts, &rev->diffopt, sizeof(opts));
-	opts.output_format = DIFF_FORMAT_SUMMARY | DIFF_FORMAT_DIFFSTAT;
-	diff_setup_done(&opts);
-
-	diff_tree_oid(get_commit_tree_oid(origin),
-		      get_commit_tree_oid(head),
-		      "", &opts);
-	diffcore_std(&opts);
-	diff_flush(&opts);
-
-	fprintf(rev->diffopt.file, "\n");
-}
-
-static void prepare_cover_text(struct pretty_print_context *pp,
-			       const char *branch_name,
-			       struct strbuf *sb,
-			       const char *encoding,
-			       int need_8bit_cte)
-{
-	const char *subject = "*** SUBJECT HERE ***";
-	const char *body = "*** BLURB HERE ***";
-	struct strbuf description_sb = STRBUF_INIT;
-	struct strbuf subject_sb = STRBUF_INIT;
-
-	if (cover_from_description_mode == COVER_FROM_NONE)
-		goto do_pp;
-
-	if (branch_name && *branch_name)
-		read_branch_desc(&description_sb, branch_name);
-	if (!description_sb.len)
-		goto do_pp;
-
-	if (cover_from_description_mode == COVER_FROM_SUBJECT ||
-			cover_from_description_mode == COVER_FROM_AUTO)
-		body = format_subject(&subject_sb, description_sb.buf, " ");
-
-	if (cover_from_description_mode == COVER_FROM_MESSAGE ||
-			(cover_from_description_mode == COVER_FROM_AUTO &&
-			 subject_sb.len > COVER_FROM_AUTO_MAX_SUBJECT_LEN))
-		body = description_sb.buf;
-	else
-		subject = subject_sb.buf;
-
-do_pp:
-	pp_title_line(pp, &subject, sb, encoding, need_8bit_cte);
-	pp_remainder(pp, &body, sb, 0);
-
-	strbuf_release(&description_sb);
-	strbuf_release(&subject_sb);
-}
-
-static int get_notes_refs(struct string_list_item *item, void *arg)
-{
-	strvec_pushf(arg, "--notes=%s", item->string);
-	return 0;
-}
-
-static void get_notes_args(struct strvec *arg, struct rev_info *rev)
-{
-	if (!rev->show_notes) {
-		strvec_push(arg, "--no-notes");
-	} else if (rev->notes_opt.use_default_notes > 0 ||
-		   (rev->notes_opt.use_default_notes == -1 &&
-		    !rev->notes_opt.extra_notes_refs.nr)) {
-		strvec_push(arg, "--notes");
-	} else {
-		for_each_string_list(&rev->notes_opt.extra_notes_refs, get_notes_refs, arg);
-	}
-}
-
-static void make_cover_letter(struct rev_info *rev, int use_stdout,
-			      struct commit *origin,
-			      int nr, struct commit **list,
-			      const char *branch_name,
-			      int quiet)
-{
-	const char *committer;
-	struct shortlog log;
-	struct strbuf sb = STRBUF_INIT;
-	int i;
-	const char *encoding = "UTF-8";
-	int need_8bit_cte = 0;
-	struct pretty_print_context pp = {0};
-	struct commit *head = list[0];
-
-	if (!cmit_fmt_is_mail(rev->commit_format))
-		die(_("cover letter needs email format"));
-
-	committer = git_committer_info(0);
-
-	if (!use_stdout &&
-	    open_next_file(NULL, rev->numbered_files ? NULL : "cover-letter", rev, quiet))
-		die(_("failed to create cover-letter file"));
-
-	log_write_email_headers(rev, head, &pp.after_subject, &need_8bit_cte, 0);
-
-	for (i = 0; !need_8bit_cte && i < nr; i++) {
-		const char *buf = get_commit_buffer(list[i], NULL);
-		if (has_non_ascii(buf))
-			need_8bit_cte = 1;
-		unuse_commit_buffer(list[i], buf);
-	}
-
-	if (!branch_name)
-		branch_name = find_branch_name(rev);
-
-	pp.fmt = CMIT_FMT_EMAIL;
-	pp.date_mode.type = DATE_RFC2822;
-	pp.rev = rev;
-	pp.print_email_subject = 1;
-	pp_user_info(&pp, NULL, &sb, committer, encoding);
-	prepare_cover_text(&pp, branch_name, &sb, encoding, need_8bit_cte);
-	fprintf(rev->diffopt.file, "%s\n", sb.buf);
-
-	strbuf_release(&sb);
-
-	shortlog_init(&log);
-	log.wrap_lines = 1;
-	log.wrap = MAIL_DEFAULT_WRAP;
-	log.in1 = 2;
-	log.in2 = 4;
-	log.file = rev->diffopt.file;
-	log.groups = SHORTLOG_GROUP_AUTHOR;
-	for (i = 0; i < nr; i++)
-		shortlog_add_commit(&log, list[i]);
-
-	shortlog_output(&log);
-
-	/* We can only do diffstat with a unique reference point */
-	if (origin)
-		show_diffstat(rev, origin, head);
-
-	if (rev->idiff_oid1) {
-		fprintf_ln(rev->diffopt.file, "%s", rev->idiff_title);
-		show_interdiff(rev->idiff_oid1, rev->idiff_oid2, 0,
-			       &rev->diffopt);
-	}
-
-	if (rev->rdiff1) {
-		/*
-		 * Pass minimum required diff-options to range-diff; others
-		 * can be added later if deemed desirable.
-		 */
-		struct diff_options opts;
-		struct strvec other_arg = STRVEC_INIT;
-		diff_setup(&opts);
-		opts.file = rev->diffopt.file;
-		opts.use_color = rev->diffopt.use_color;
-		diff_setup_done(&opts);
-		fprintf_ln(rev->diffopt.file, "%s", rev->rdiff_title);
-		get_notes_args(&other_arg, rev);
-		show_range_diff(rev->rdiff1, rev->rdiff2,
-				rev->creation_factor, 1, &opts, &other_arg);
-		strvec_clear(&other_arg);
-	}
-}
-
-static const char *clean_message_id(const char *msg_id)
-{
-	char ch;
-	const char *a, *z, *m;
-
-	m = msg_id;
-	while ((ch = *m) && (isspace(ch) || (ch == '<')))
-		m++;
-	a = m;
-	z = NULL;
-	while ((ch = *m)) {
-		if (!isspace(ch) && (ch != '>'))
-			z = m;
-		m++;
-	}
-	if (!z)
-		die(_("insane in-reply-to: %s"), msg_id);
-	if (++z == m)
-		return a;
-	return xmemdupz(a, z - a);
-}
-
-static const char *set_outdir(const char *prefix, const char *output_directory)
-{
-	if (output_directory && is_absolute_path(output_directory))
-		return output_directory;
-
-	if (!prefix || !*prefix) {
-		if (output_directory)
-			return output_directory;
-		/* The user did not explicitly ask for "./" */
-		outdir_offset = 2;
-		return "./";
-	}
-
-	outdir_offset = strlen(prefix);
-	if (!output_directory)
-		return prefix;
-
-	return prefix_filename(prefix, output_directory);
-}
-
-static const char * const builtin_format_patch_usage[] = {
-	N_("git format-patch [<options>] [<since> | <revision-range>]"),
-	NULL
-};
-
-static int keep_subject = 0;
-
-static int keep_callback(const struct option *opt, const char *arg, int unset)
-{
-	BUG_ON_OPT_NEG(unset);
-	BUG_ON_OPT_ARG(arg);
-	((struct rev_info *)opt->value)->total = -1;
-	keep_subject = 1;
-	return 0;
-}
-
-static int subject_prefix = 0;
-
-static int subject_prefix_callback(const struct option *opt, const char *arg,
-			    int unset)
-{
-	BUG_ON_OPT_NEG(unset);
-	subject_prefix = 1;
-	((struct rev_info *)opt->value)->subject_prefix = arg;
-	return 0;
-}
-
-static int rfc_callback(const struct option *opt, const char *arg, int unset)
-{
-	BUG_ON_OPT_NEG(unset);
-	BUG_ON_OPT_ARG(arg);
-	return subject_prefix_callback(opt, "RFC PATCH", unset);
-}
-
-static int numbered_cmdline_opt = 0;
-
-static int numbered_callback(const struct option *opt, const char *arg,
-			     int unset)
-{
-	BUG_ON_OPT_ARG(arg);
-	*(int *)opt->value = numbered_cmdline_opt = unset ? 0 : 1;
-	if (unset)
-		auto_number =  0;
-	return 0;
-}
-
-static int no_numbered_callback(const struct option *opt, const char *arg,
-				int unset)
-{
-	BUG_ON_OPT_NEG(unset);
-	return numbered_callback(opt, arg, 1);
-}
-
-static int output_directory_callback(const struct option *opt, const char *arg,
-			      int unset)
-{
-	const char **dir = (const char **)opt->value;
-	BUG_ON_OPT_NEG(unset);
-	if (*dir)
-		die(_("two output directories?"));
-	*dir = arg;
-	return 0;
-}
-
-static int thread_callback(const struct option *opt, const char *arg, int unset)
-{
-	enum thread_level *thread = (enum thread_level *)opt->value;
-	if (unset)
-		*thread = THREAD_UNSET;
-	else if (!arg || !strcmp(arg, "shallow"))
-		*thread = THREAD_SHALLOW;
-	else if (!strcmp(arg, "deep"))
-		*thread = THREAD_DEEP;
-	/*
-	 * Please update _git_formatpatch() in git-completion.bash
-	 * when you add new options.
-	 */
-	else
-		return 1;
-	return 0;
-}
-
-static int attach_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct rev_info *rev = (struct rev_info *)opt->value;
-	if (unset)
-		rev->mime_boundary = NULL;
-	else if (arg)
-		rev->mime_boundary = arg;
-	else
-		rev->mime_boundary = git_version_string;
-	rev->no_inline = unset ? 0 : 1;
-	return 0;
-}
-
-static int inline_callback(const struct option *opt, const char *arg, int unset)
-{
-	struct rev_info *rev = (struct rev_info *)opt->value;
-	if (unset)
-		rev->mime_boundary = NULL;
-	else if (arg)
-		rev->mime_boundary = arg;
-	else
-		rev->mime_boundary = git_version_string;
-	rev->no_inline = 0;
-	return 0;
-}
-
-static int header_callback(const struct option *opt, const char *arg, int unset)
-{
-	if (unset) {
-		string_list_clear(&extra_hdr, 0);
-		string_list_clear(&extra_to, 0);
-		string_list_clear(&extra_cc, 0);
-	} else {
-		add_header(arg);
-	}
-	return 0;
-}
-
-static int to_callback(const struct option *opt, const char *arg, int unset)
-{
-	if (unset)
-		string_list_clear(&extra_to, 0);
-	else
-		string_list_append(&extra_to, arg);
-	return 0;
-}
-
-static int cc_callback(const struct option *opt, const char *arg, int unset)
-{
-	if (unset)
-		string_list_clear(&extra_cc, 0);
-	else
-		string_list_append(&extra_cc, arg);
-	return 0;
-}
-
-static int from_callback(const struct option *opt, const char *arg, int unset)
-{
-	char **from = opt->value;
-
-	free(*from);
-
-	if (unset)
-		*from = NULL;
-	else if (arg)
-		*from = xstrdup(arg);
-	else
-		*from = xstrdup(git_committer_info(IDENT_NO_DATE));
-	return 0;
-}
-
-static int base_callback(const struct option *opt, const char *arg, int unset)
-{
-	const char **base_commit = opt->value;
-
-	if (unset) {
-		auto_base = AUTO_BASE_NEVER;
-		*base_commit = NULL;
-	} else if (!strcmp(arg, "auto")) {
-		auto_base = AUTO_BASE_ALWAYS;
-		*base_commit = NULL;
-	} else {
-		auto_base = AUTO_BASE_NEVER;
-		*base_commit = arg;
-	}
-	return 0;
-}
-
-struct base_tree_info {
-	struct object_id base_commit;
-	int nr_patch_id, alloc_patch_id;
-	struct object_id *patch_id;
-};
-
-static struct commit *get_base_commit(const char *base_commit,
-				      struct commit **list,
-				      int total)
-{
-	struct commit *base = NULL;
-	struct commit **rev;
-	int i = 0, rev_nr = 0, auto_select, die_on_failure;
-
-	switch (auto_base) {
-	case AUTO_BASE_NEVER:
-		if (base_commit) {
-			auto_select = 0;
-			die_on_failure = 1;
-		} else {
-			/* no base information is requested */
-			return NULL;
-		}
-		break;
-	case AUTO_BASE_ALWAYS:
-	case AUTO_BASE_WHEN_ABLE:
-		if (base_commit) {
-			BUG("requested automatic base selection but a commit was provided");
-		} else {
-			auto_select = 1;
-			die_on_failure = auto_base == AUTO_BASE_ALWAYS;
-		}
-		break;
-	default:
-		BUG("unexpected automatic base selection method");
-	}
-
-	if (!auto_select) {
-		base = lookup_commit_reference_by_name(base_commit);
-		if (!base)
-			die(_("unknown commit %s"), base_commit);
-	} else {
-		struct branch *curr_branch = branch_get(NULL);
-		const char *upstream = branch_get_upstream(curr_branch, NULL);
-		if (upstream) {
-			struct commit_list *base_list;
-			struct commit *commit;
-			struct object_id oid;
-
-			if (get_oid(upstream, &oid)) {
-				if (die_on_failure)
-					die(_("failed to resolve '%s' as a valid ref"), upstream);
-				else
-					return NULL;
-			}
-			commit = lookup_commit_or_die(&oid, "upstream base");
-			base_list = get_merge_bases_many(commit, total, list);
-			/* There should be one and only one merge base. */
-			if (!base_list || base_list->next) {
-				if (die_on_failure) {
-					die(_("could not find exact merge base"));
-				} else {
-					free_commit_list(base_list);
-					return NULL;
-				}
-			}
-			base = base_list->item;
-			free_commit_list(base_list);
-		} else {
-			if (die_on_failure)
-				die(_("failed to get upstream, if you want to record base commit automatically,\n"
-				      "please use git branch --set-upstream-to to track a remote branch.\n"
-				      "Or you could specify base commit by --base=<base-commit-id> manually"));
-			else
-				return NULL;
-		}
-	}
-
-	ALLOC_ARRAY(rev, total);
-	for (i = 0; i < total; i++)
-		rev[i] = list[i];
-
-	rev_nr = total;
-	/*
-	 * Get merge base through pair-wise computations
-	 * and store it in rev[0].
-	 */
-	while (rev_nr > 1) {
-		for (i = 0; i < rev_nr / 2; i++) {
-			struct commit_list *merge_base;
-			merge_base = get_merge_bases(rev[2 * i], rev[2 * i + 1]);
-			if (!merge_base || merge_base->next) {
-				if (die_on_failure) {
-					die(_("failed to find exact merge base"));
-				} else {
-					free(rev);
-					return NULL;
-				}
-			}
-
-			rev[i] = merge_base->item;
-		}
-
-		if (rev_nr % 2)
-			rev[i] = rev[2 * i];
-		rev_nr = DIV_ROUND_UP(rev_nr, 2);
-	}
-
-	if (!in_merge_bases(base, rev[0])) {
-		if (die_on_failure) {
-			die(_("base commit should be the ancestor of revision list"));
-		} else {
-			free(rev);
-			return NULL;
-		}
-	}
-
-	for (i = 0; i < total; i++) {
-		if (base == list[i]) {
-			if (die_on_failure) {
-				die(_("base commit shouldn't be in revision list"));
-			} else {
-				free(rev);
-				return NULL;
-			}
-		}
-	}
-
-	free(rev);
-	return base;
-}
-
-define_commit_slab(commit_base, int);
-
-static void prepare_bases(struct base_tree_info *bases,
-			  struct commit *base,
-			  struct commit **list,
-			  int total)
-{
-	struct commit *commit;
-	struct rev_info revs;
-	struct diff_options diffopt;
-	struct commit_base commit_base;
-	int i;
-
-	if (!base)
-		return;
-
-	init_commit_base(&commit_base);
-	repo_diff_setup(the_repository, &diffopt);
-	diffopt.flags.recursive = 1;
-	diff_setup_done(&diffopt);
-
-	oidcpy(&bases->base_commit, &base->object.oid);
-
-	repo_init_revisions(the_repository, &revs, NULL);
-	revs.max_parents = 1;
-	revs.topo_order = 1;
-	for (i = 0; i < total; i++) {
-		list[i]->object.flags &= ~UNINTERESTING;
-		add_pending_object(&revs, &list[i]->object, "rev_list");
-		*commit_base_at(&commit_base, list[i]) = 1;
-	}
-	base->object.flags |= UNINTERESTING;
-	add_pending_object(&revs, &base->object, "base");
-
-	if (prepare_revision_walk(&revs))
-		die(_("revision walk setup failed"));
-	/*
-	 * Traverse the commits list, get prerequisite patch ids
-	 * and stuff them in bases structure.
-	 */
-	while ((commit = get_revision(&revs)) != NULL) {
-		struct object_id oid;
-		struct object_id *patch_id;
-		if (*commit_base_at(&commit_base, commit))
-			continue;
-		if (commit_patch_id(commit, &diffopt, &oid, 0, 1))
-			die(_("cannot get patch id"));
-		ALLOC_GROW(bases->patch_id, bases->nr_patch_id + 1, bases->alloc_patch_id);
-		patch_id = bases->patch_id + bases->nr_patch_id;
-		oidcpy(patch_id, &oid);
-		bases->nr_patch_id++;
-	}
-	clear_commit_base(&commit_base);
-}
-
-static void print_bases(struct base_tree_info *bases, FILE *file)
-{
-	int i;
-
-	/* Only do this once, either for the cover or for the first one */
-	if (is_null_oid(&bases->base_commit))
-		return;
-
-	/* Show the base commit */
-	fprintf(file, "\nbase-commit: %s\n", oid_to_hex(&bases->base_commit));
-
-	/* Show the prerequisite patches */
-	for (i = bases->nr_patch_id - 1; i >= 0; i--)
-		fprintf(file, "prerequisite-patch-id: %s\n", oid_to_hex(&bases->patch_id[i]));
-
-	free(bases->patch_id);
-	bases->nr_patch_id = 0;
-	bases->alloc_patch_id = 0;
-	oidclr(&bases->base_commit);
-}
-
-static const char *diff_title(struct strbuf *sb, int reroll_count,
-		       const char *generic, const char *rerolled)
-{
-	if (reroll_count <= 0)
-		strbuf_addstr(sb, generic);
-	else /* RFC may be v0, so allow -v1 to diff against v0 */
-		strbuf_addf(sb, rerolled, reroll_count - 1);
-	return sb->buf;
-}
-
-static void infer_range_diff_ranges(struct strbuf *r1,
-				    struct strbuf *r2,
-				    const char *prev,
-				    struct commit *origin,
-				    struct commit *head)
-{
-	const char *head_oid = oid_to_hex(&head->object.oid);
-	int prev_is_range = !!strstr(prev, "..");
-
-	if (prev_is_range)
-		strbuf_addstr(r1, prev);
-	else
-		strbuf_addf(r1, "%s..%s", head_oid, prev);
-
-	if (origin)
-		strbuf_addf(r2, "%s..%s", oid_to_hex(&origin->object.oid), head_oid);
-	else if (prev_is_range)
-		die(_("failed to infer range-diff origin of current series"));
-	else {
-		warning(_("using '%s' as range-diff origin of current series"), prev);
-		strbuf_addf(r2, "%s..%s", prev, head_oid);
-	}
-}
-
-int cmd_format_patch(int argc, const char **argv, const char *prefix)
-{
-	struct commit *commit;
-	struct commit **list = NULL;
-	struct rev_info rev;
-	struct setup_revision_opt s_r_opt;
-	int nr = 0, total, i;
-	int use_stdout = 0;
-	int start_number = -1;
-	int just_numbers = 0;
-	int ignore_if_in_upstream = 0;
-	int cover_letter = -1;
-	int boundary_count = 0;
-	int no_binary_diff = 0;
-	int zero_commit = 0;
-	struct commit *origin = NULL;
-	const char *in_reply_to = NULL;
-	struct patch_ids ids;
-	struct strbuf buf = STRBUF_INIT;
-	int use_patch_format = 0;
-	int quiet = 0;
-	int reroll_count = -1;
-	char *cover_from_description_arg = NULL;
-	char *branch_name = NULL;
-	char *base_commit = NULL;
-	struct base_tree_info bases;
-	struct commit *base;
-	int show_progress = 0;
-	struct progress *progress = NULL;
-	struct oid_array idiff_prev = OID_ARRAY_INIT;
-	struct strbuf idiff_title = STRBUF_INIT;
-	const char *rdiff_prev = NULL;
-	struct strbuf rdiff1 = STRBUF_INIT;
-	struct strbuf rdiff2 = STRBUF_INIT;
-	struct strbuf rdiff_title = STRBUF_INIT;
-	int creation_factor = -1;
-
-	const struct option builtin_format_patch_options[] = {
-		OPT_CALLBACK_F('n', "numbered", &numbered, NULL,
-			    N_("use [PATCH n/m] even with a single patch"),
-			    PARSE_OPT_NOARG, numbered_callback),
-		OPT_CALLBACK_F('N', "no-numbered", &numbered, NULL,
-			    N_("use [PATCH] even with multiple patches"),
-			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, no_numbered_callback),
-		OPT_BOOL('s', "signoff", &do_signoff, N_("add Signed-off-by:")),
-		OPT_BOOL(0, "stdout", &use_stdout,
-			    N_("print patches to standard out")),
-		OPT_BOOL(0, "cover-letter", &cover_letter,
-			    N_("generate a cover letter")),
-		OPT_BOOL(0, "numbered-files", &just_numbers,
-			    N_("use simple number sequence for output file names")),
-		OPT_STRING(0, "suffix", &fmt_patch_suffix, N_("sfx"),
-			    N_("use <sfx> instead of '.patch'")),
-		OPT_INTEGER(0, "start-number", &start_number,
-			    N_("start numbering patches at <n> instead of 1")),
-		OPT_INTEGER('v', "reroll-count", &reroll_count,
-			    N_("mark the series as Nth re-roll")),
-		OPT_CALLBACK_F(0, "rfc", &rev, NULL,
-			    N_("Use [RFC PATCH] instead of [PATCH]"),
-			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, rfc_callback),
-		OPT_STRING(0, "cover-from-description", &cover_from_description_arg,
-			    N_("cover-from-description-mode"),
-			    N_("generate parts of a cover letter based on a branch's description")),
-		OPT_CALLBACK_F(0, "subject-prefix", &rev, N_("prefix"),
-			    N_("Use [<prefix>] instead of [PATCH]"),
-			    PARSE_OPT_NONEG, subject_prefix_callback),
-		OPT_CALLBACK_F('o', "output-directory", &output_directory,
-			    N_("dir"), N_("store resulting files in <dir>"),
-			    PARSE_OPT_NONEG, output_directory_callback),
-		OPT_CALLBACK_F('k', "keep-subject", &rev, NULL,
-			    N_("don't strip/add [PATCH]"),
-			    PARSE_OPT_NOARG | PARSE_OPT_NONEG, keep_callback),
-		OPT_BOOL(0, "no-binary", &no_binary_diff,
-			 N_("don't output binary diffs")),
-		OPT_BOOL(0, "zero-commit", &zero_commit,
-			 N_("output all-zero hash in From header")),
-		OPT_BOOL(0, "ignore-if-in-upstream", &ignore_if_in_upstream,
-			 N_("don't include a patch matching a commit upstream")),
-		OPT_SET_INT_F('p', "no-stat", &use_patch_format,
-			      N_("show patch format instead of default (patch + stat)"),
-			      1, PARSE_OPT_NONEG),
-		OPT_GROUP(N_("Messaging")),
-		OPT_CALLBACK(0, "add-header", NULL, N_("header"),
-			    N_("add email header"), header_callback),
-		OPT_CALLBACK(0, "to", NULL, N_("email"), N_("add To: header"), to_callback),
-		OPT_CALLBACK(0, "cc", NULL, N_("email"), N_("add Cc: header"), cc_callback),
-		OPT_CALLBACK_F(0, "from", &from, N_("ident"),
-			    N_("set From address to <ident> (or committer ident if absent)"),
-			    PARSE_OPT_OPTARG, from_callback),
-		OPT_STRING(0, "in-reply-to", &in_reply_to, N_("message-id"),
-			    N_("make first mail a reply to <message-id>")),
-		OPT_CALLBACK_F(0, "attach", &rev, N_("boundary"),
-			    N_("attach the patch"), PARSE_OPT_OPTARG,
-			    attach_callback),
-		OPT_CALLBACK_F(0, "inline", &rev, N_("boundary"),
-			    N_("inline the patch"),
-			    PARSE_OPT_OPTARG | PARSE_OPT_NONEG,
-			    inline_callback),
-		OPT_CALLBACK_F(0, "thread", &thread, N_("style"),
-			    N_("enable message threading, styles: shallow, deep"),
-			    PARSE_OPT_OPTARG, thread_callback),
-		OPT_STRING(0, "signature", &signature, N_("signature"),
-			    N_("add a signature")),
-		OPT_CALLBACK_F(0, "base", &base_commit, N_("base-commit"),
-			       N_("add prerequisite tree info to the patch series"),
-			       0, base_callback),
-		OPT_FILENAME(0, "signature-file", &signature_file,
-				N_("add a signature from a file")),
-		OPT__QUIET(&quiet, N_("don't print the patch filenames")),
-		OPT_BOOL(0, "progress", &show_progress,
-			 N_("show progress while generating patches")),
-		OPT_CALLBACK(0, "interdiff", &idiff_prev, N_("rev"),
-			     N_("show changes against <rev> in cover letter or single patch"),
-			     parse_opt_object_name),
-		OPT_STRING(0, "range-diff", &rdiff_prev, N_("refspec"),
-			   N_("show changes against <refspec> in cover letter or single patch")),
-		OPT_INTEGER(0, "creation-factor", &creation_factor,
-			    N_("percentage by which creation is weighted")),
-		OPT_END()
-	};
-
-	extra_hdr.strdup_strings = 1;
-	extra_to.strdup_strings = 1;
-	extra_cc.strdup_strings = 1;
-	init_log_defaults();
-	init_display_notes(&notes_opt);
-	git_config(git_format_config, NULL);
-	repo_init_revisions(the_repository, &rev, prefix);
-	rev.show_notes = show_notes;
-	memcpy(&rev.notes_opt, &notes_opt, sizeof(notes_opt));
-	rev.commit_format = CMIT_FMT_EMAIL;
-	rev.encode_email_headers = default_encode_email_headers;
-	rev.expand_tabs_in_log_default = 0;
-	rev.verbose_header = 1;
-	rev.diff = 1;
-	rev.max_parents = 1;
-	rev.diffopt.flags.recursive = 1;
-	rev.subject_prefix = fmt_patch_subject_prefix;
-	memset(&s_r_opt, 0, sizeof(s_r_opt));
-	s_r_opt.def = "HEAD";
-	s_r_opt.revarg_opt = REVARG_COMMITTISH;
-
-	if (default_attach) {
-		rev.mime_boundary = default_attach;
-		rev.no_inline = 1;
-	}
-
-	/*
-	 * Parse the arguments before setup_revisions(), or something
-	 * like "git format-patch -o a123 HEAD^.." may fail; a123 is
-	 * possibly a valid SHA1.
-	 */
-	argc = parse_options(argc, argv, prefix, builtin_format_patch_options,
-			     builtin_format_patch_usage,
-			     PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
-			     PARSE_OPT_KEEP_DASHDASH);
-
-	if (cover_from_description_arg)
-		cover_from_description_mode = parse_cover_from_description(cover_from_description_arg);
-
-	if (0 < reroll_count) {
-		struct strbuf sprefix = STRBUF_INIT;
-		strbuf_addf(&sprefix, "%s v%d",
-			    rev.subject_prefix, reroll_count);
-		rev.reroll_count = reroll_count;
-		rev.subject_prefix = strbuf_detach(&sprefix, NULL);
-	}
-
-	for (i = 0; i < extra_hdr.nr; i++) {
-		strbuf_addstr(&buf, extra_hdr.items[i].string);
-		strbuf_addch(&buf, '\n');
-	}
-
-	if (extra_to.nr)
-		strbuf_addstr(&buf, "To: ");
-	for (i = 0; i < extra_to.nr; i++) {
-		if (i)
-			strbuf_addstr(&buf, "    ");
-		strbuf_addstr(&buf, extra_to.items[i].string);
-		if (i + 1 < extra_to.nr)
-			strbuf_addch(&buf, ',');
-		strbuf_addch(&buf, '\n');
-	}
-
-	if (extra_cc.nr)
-		strbuf_addstr(&buf, "Cc: ");
-	for (i = 0; i < extra_cc.nr; i++) {
-		if (i)
-			strbuf_addstr(&buf, "    ");
-		strbuf_addstr(&buf, extra_cc.items[i].string);
-		if (i + 1 < extra_cc.nr)
-			strbuf_addch(&buf, ',');
-		strbuf_addch(&buf, '\n');
-	}
-
-	rev.extra_headers = strbuf_detach(&buf, NULL);
-
-	if (from) {
-		if (split_ident_line(&rev.from_ident, from, strlen(from)))
-			die(_("invalid ident line: %s"), from);
-	}
-
-	if (start_number < 0)
-		start_number = 1;
-
-	/*
-	 * If numbered is set solely due to format.numbered in config,
-	 * and it would conflict with --keep-subject (-k) from the
-	 * command line, reset "numbered".
-	 */
-	if (numbered && keep_subject && !numbered_cmdline_opt)
-		numbered = 0;
-
-	if (numbered && keep_subject)
-		die(_("-n and -k are mutually exclusive"));
-	if (keep_subject && subject_prefix)
-		die(_("--subject-prefix/--rfc and -k are mutually exclusive"));
-	rev.preserve_subject = keep_subject;
-
-	argc = setup_revisions(argc, argv, &rev, &s_r_opt);
-	if (argc > 1)
-		die(_("unrecognized argument: %s"), argv[1]);
-
-	if (rev.diffopt.output_format & DIFF_FORMAT_NAME)
-		die(_("--name-only does not make sense"));
-	if (rev.diffopt.output_format & DIFF_FORMAT_NAME_STATUS)
-		die(_("--name-status does not make sense"));
-	if (rev.diffopt.output_format & DIFF_FORMAT_CHECKDIFF)
-		die(_("--check does not make sense"));
-
-	if (!use_patch_format &&
-		(!rev.diffopt.output_format ||
-		 rev.diffopt.output_format == DIFF_FORMAT_PATCH))
-		rev.diffopt.output_format = DIFF_FORMAT_DIFFSTAT | DIFF_FORMAT_SUMMARY;
-	if (!rev.diffopt.stat_width)
-		rev.diffopt.stat_width = MAIL_DEFAULT_WRAP;
-
-	/* Always generate a patch */
-	rev.diffopt.output_format |= DIFF_FORMAT_PATCH;
-
-	rev.zero_commit = zero_commit;
-
-	if (!rev.diffopt.flags.text && !no_binary_diff)
-		rev.diffopt.flags.binary = 1;
-
-	if (rev.show_notes)
-		load_display_notes(&rev.notes_opt);
-
-	if (!output_directory && !use_stdout)
-		output_directory = config_output_directory;
-
-	if (!use_stdout)
-		output_directory = set_outdir(prefix, output_directory);
-	else
-		setup_pager();
-
-	if (output_directory) {
-		int saved;
-		if (rev.diffopt.use_color != GIT_COLOR_ALWAYS)
-			rev.diffopt.use_color = GIT_COLOR_NEVER;
-		if (use_stdout)
-			die(_("standard output, or directory, which one?"));
-		/*
-		 * We consider <outdir> as 'outside of gitdir', therefore avoid
-		 * applying adjust_shared_perm in s-c-l-d.
-		 */
-		saved = get_shared_repository();
-		set_shared_repository(0);
-		switch (safe_create_leading_directories_const(output_directory)) {
-		case SCLD_OK:
-		case SCLD_EXISTS:
-			break;
-		default:
-			die(_("could not create leading directories "
-			      "of '%s'"), output_directory);
-		}
-		set_shared_repository(saved);
-		if (mkdir(output_directory, 0777) < 0 && errno != EEXIST)
-			die_errno(_("could not create directory '%s'"),
-				  output_directory);
-	}
-
-	if (rev.pending.nr == 1) {
-		int check_head = 0;
-
-		if (rev.max_count < 0 && !rev.show_root_diff) {
-			/*
-			 * This is traditional behaviour of "git format-patch
-			 * origin" that prepares what the origin side still
-			 * does not have.
-			 */
-			rev.pending.objects[0].item->flags |= UNINTERESTING;
-			add_head_to_pending(&rev);
-			check_head = 1;
-		}
-		/*
-		 * Otherwise, it is "format-patch -22 HEAD", and/or
-		 * "format-patch --root HEAD".  The user wants
-		 * get_revision() to do the usual traversal.
-		 */
-
-		if (!strcmp(rev.pending.objects[0].name, "HEAD"))
-			check_head = 1;
-
-		if (check_head) {
-			const char *ref, *v;
-			ref = resolve_ref_unsafe("HEAD", RESOLVE_REF_READING,
-						 NULL, NULL);
-			if (ref && skip_prefix(ref, "refs/heads/", &v))
-				branch_name = xstrdup(v);
-			else
-				branch_name = xstrdup(""); /* no branch */
-		}
-	}
-
-	/*
-	 * We cannot move this anywhere earlier because we do want to
-	 * know if --root was given explicitly from the command line.
-	 */
-	rev.show_root_diff = 1;
-
-	if (ignore_if_in_upstream) {
-		/* Don't say anything if head and upstream are the same. */
-		if (rev.pending.nr == 2) {
-			struct object_array_entry *o = rev.pending.objects;
-			if (oideq(&o[0].item->oid, &o[1].item->oid))
-				goto done;
-		}
-		get_patch_ids(&rev, &ids);
-	}
-
-	if (prepare_revision_walk(&rev))
-		die(_("revision walk setup failed"));
-	rev.boundary = 1;
-	while ((commit = get_revision(&rev)) != NULL) {
-		if (commit->object.flags & BOUNDARY) {
-			boundary_count++;
-			origin = (boundary_count == 1) ? commit : NULL;
-			continue;
-		}
-
-		if (ignore_if_in_upstream && has_commit_patch_id(commit, &ids))
-			continue;
-
-		nr++;
-		REALLOC_ARRAY(list, nr);
-		list[nr - 1] = commit;
-	}
-	if (nr == 0)
-		/* nothing to do */
-		goto done;
-	total = nr;
-	if (cover_letter == -1) {
-		if (config_cover_letter == COVER_AUTO)
-			cover_letter = (total > 1);
-		else
-			cover_letter = (config_cover_letter == COVER_ON);
-	}
-	if (!keep_subject && auto_number && (total > 1 || cover_letter))
-		numbered = 1;
-	if (numbered)
-		rev.total = total + start_number - 1;
-
-	if (idiff_prev.nr) {
-		if (!cover_letter && total != 1)
-			die(_("--interdiff requires --cover-letter or single patch"));
-		rev.idiff_oid1 = &idiff_prev.oid[idiff_prev.nr - 1];
-		rev.idiff_oid2 = get_commit_tree_oid(list[0]);
-		rev.idiff_title = diff_title(&idiff_title, reroll_count,
-					     _("Interdiff:"),
-					     _("Interdiff against v%d:"));
-	}
-
-	if (creation_factor < 0)
-		creation_factor = RANGE_DIFF_CREATION_FACTOR_DEFAULT;
-	else if (!rdiff_prev)
-		die(_("--creation-factor requires --range-diff"));
-
-	if (rdiff_prev) {
-		if (!cover_letter && total != 1)
-			die(_("--range-diff requires --cover-letter or single patch"));
-
-		infer_range_diff_ranges(&rdiff1, &rdiff2, rdiff_prev,
-					origin, list[0]);
-		rev.rdiff1 = rdiff1.buf;
-		rev.rdiff2 = rdiff2.buf;
-		rev.creation_factor = creation_factor;
-		rev.rdiff_title = diff_title(&rdiff_title, reroll_count,
-					     _("Range-diff:"),
-					     _("Range-diff against v%d:"));
-	}
-
-	if (!signature) {
-		; /* --no-signature inhibits all signatures */
-	} else if (signature && signature != git_version_string) {
-		; /* non-default signature already set */
-	} else if (signature_file) {
-		struct strbuf buf = STRBUF_INIT;
-
-		if (strbuf_read_file(&buf, signature_file, 128) < 0)
-			die_errno(_("unable to read signature file '%s'"), signature_file);
-		signature = strbuf_detach(&buf, NULL);
-	}
-
-	memset(&bases, 0, sizeof(bases));
-	base = get_base_commit(base_commit, list, nr);
-	if (base) {
-		reset_revision_walk();
-		clear_object_flags(UNINTERESTING);
-		prepare_bases(&bases, base, list, nr);
-	}
-
-	if (in_reply_to || thread || cover_letter)
-		rev.ref_message_ids = xcalloc(1, sizeof(struct string_list));
-	if (in_reply_to) {
-		const char *msgid = clean_message_id(in_reply_to);
-		string_list_append(rev.ref_message_ids, msgid);
-	}
-	rev.numbered_files = just_numbers;
-	rev.patch_suffix = fmt_patch_suffix;
-	if (cover_letter) {
-		if (thread)
-			gen_message_id(&rev, "cover");
-		make_cover_letter(&rev, use_stdout,
-				  origin, nr, list, branch_name, quiet);
-		print_bases(&bases, rev.diffopt.file);
-		print_signature(rev.diffopt.file);
-		total++;
-		start_number--;
-		/* interdiff/range-diff in cover-letter; omit from patches */
-		rev.idiff_oid1 = NULL;
-		rev.rdiff1 = NULL;
-	}
-	rev.add_signoff = do_signoff;
-
-	if (show_progress)
-		progress = start_delayed_progress(_("Generating patches"), total);
-	while (0 <= --nr) {
-		int shown;
-		display_progress(progress, total - nr);
-		commit = list[nr];
-		rev.nr = total - nr + (start_number - 1);
-		/* Make the second and subsequent mails replies to the first */
-		if (thread) {
-			/* Have we already had a message ID? */
-			if (rev.message_id) {
-				/*
-				 * For deep threading: make every mail
-				 * a reply to the previous one, no
-				 * matter what other options are set.
-				 *
-				 * For shallow threading:
-				 *
-				 * Without --cover-letter and
-				 * --in-reply-to, make every mail a
-				 * reply to the one before.
-				 *
-				 * With --in-reply-to but no
-				 * --cover-letter, make every mail a
-				 * reply to the <reply-to>.
-				 *
-				 * With --cover-letter, make every
-				 * mail but the cover letter a reply
-				 * to the cover letter.  The cover
-				 * letter is a reply to the
-				 * --in-reply-to, if specified.
-				 */
-				if (thread == THREAD_SHALLOW
-				    && rev.ref_message_ids->nr > 0
-				    && (!cover_letter || rev.nr > 1))
-					free(rev.message_id);
-				else
-					string_list_append(rev.ref_message_ids,
-							   rev.message_id);
-			}
-			gen_message_id(&rev, oid_to_hex(&commit->object.oid));
-		}
-
-		if (!use_stdout &&
-		    open_next_file(rev.numbered_files ? NULL : commit, NULL, &rev, quiet))
-			die(_("failed to create output files"));
-		shown = log_tree_commit(&rev, commit);
-		free_commit_buffer(the_repository->parsed_objects,
-				   commit);
-
-		/* We put one extra blank line between formatted
-		 * patches and this flag is used by log-tree code
-		 * to see if it needs to emit a LF before showing
-		 * the log; when using one file per patch, we do
-		 * not want the extra blank line.
-		 */
-		if (!use_stdout)
-			rev.shown_one = 0;
-		if (shown) {
-			print_bases(&bases, rev.diffopt.file);
-			if (rev.mime_boundary)
-				fprintf(rev.diffopt.file, "\n--%s%s--\n\n\n",
-				       mime_boundary_leader,
-				       rev.mime_boundary);
-			else
-				print_signature(rev.diffopt.file);
-		}
-		if (!use_stdout)
-			fclose(rev.diffopt.file);
-	}
-	stop_progress(&progress);
-	free(list);
-	free(branch_name);
-	string_list_clear(&extra_to, 0);
-	string_list_clear(&extra_cc, 0);
-	string_list_clear(&extra_hdr, 0);
-	if (ignore_if_in_upstream)
-		free_patch_ids(&ids);
-
-done:
-	oid_array_clear(&idiff_prev);
-	strbuf_release(&idiff_title);
-	strbuf_release(&rdiff1);
-	strbuf_release(&rdiff2);
-	strbuf_release(&rdiff_title);
-	return 0;
-}
-
-static int add_pending_commit(const char *arg, struct rev_info *revs, int flags)
-{
-	struct object_id oid;
-	if (get_oid(arg, &oid) == 0) {
-		struct commit *commit = lookup_commit_reference(the_repository,
-								&oid);
-		if (commit) {
-			commit->object.flags |= flags;
-			add_pending_object(revs, &commit->object, arg);
-			return 0;
-		}
-	}
-	return -1;
-}
-
-static const char * const cherry_usage[] = {
-	N_("git cherry [-v] [<upstream> [<head> [<limit>]]]"),
-	NULL
-};
-
-static void print_commit(char sign, struct commit *commit, int verbose,
-			 int abbrev, FILE *file)
-{
-	if (!verbose) {
-		fprintf(file, "%c %s\n", sign,
-		       find_unique_abbrev(&commit->object.oid, abbrev));
-	} else {
-		struct strbuf buf = STRBUF_INIT;
-		pp_commit_easy(CMIT_FMT_ONELINE, commit, &buf);
-		fprintf(file, "%c %s %s\n", sign,
-		       find_unique_abbrev(&commit->object.oid, abbrev),
-		       buf.buf);
-		strbuf_release(&buf);
-	}
-}
-
-int cmd_cherry(int argc, const char **argv, const char *prefix)
-{
-	struct rev_info revs;
-	struct patch_ids ids;
-	struct commit *commit;
-	struct commit_list *list = NULL;
-	struct branch *current_branch;
-	const char *upstream;
-	const char *head = "HEAD";
-	const char *limit = NULL;
-	int verbose = 0, abbrev = 0;
-
-	struct option options[] = {
-		OPT__ABBREV(&abbrev),
-		OPT__VERBOSE(&verbose, N_("be verbose")),
-		OPT_END()
-	};
-
-	argc = parse_options(argc, argv, prefix, options, cherry_usage, 0);
-
-	switch (argc) {
-	case 3:
-		limit = argv[2];
-		/* FALLTHROUGH */
-	case 2:
-		head = argv[1];
-		/* FALLTHROUGH */
-	case 1:
-		upstream = argv[0];
-		break;
-	default:
-		current_branch = branch_get(NULL);
-		upstream = branch_get_upstream(current_branch, NULL);
-		if (!upstream) {
-			fprintf(stderr, _("Could not find a tracked"
-					" remote branch, please"
-					" specify <upstream> manually.\n"));
-			usage_with_options(cherry_usage, options);
-		}
-	}
-
-	repo_init_revisions(the_repository, &revs, prefix);
-	revs.max_parents = 1;
-
-	if (add_pending_commit(head, &revs, 0))
-		die(_("unknown commit %s"), head);
-	if (add_pending_commit(upstream, &revs, UNINTERESTING))
-		die(_("unknown commit %s"), upstream);
-
-	/* Don't say anything if head and upstream are the same. */
-	if (revs.pending.nr == 2) {
-		struct object_array_entry *o = revs.pending.objects;
-		if (oideq(&o[0].item->oid, &o[1].item->oid))
-			return 0;
-	}
-
-	get_patch_ids(&revs, &ids);
-
-	if (limit && add_pending_commit(limit, &revs, UNINTERESTING))
-		die(_("unknown commit %s"), limit);
-
-	/* reverse the list of commits */
-	if (prepare_revision_walk(&revs))
-		die(_("revision walk setup failed"));
-	while ((commit = get_revision(&revs)) != NULL) {
-		commit_list_insert(commit, &list);
-	}
-
-	while (list) {
-		char sign = '+';
-
-		commit = list->item;
-		if (has_commit_patch_id(commit, &ids))
-			sign = '-';
-		print_commit(sign, commit, verbose, abbrev, revs.diffopt.file);
-		list = list->next;
-	}
-
-	free_patch_ids(&ids);
-	return 0;
-}